Frank Seravalli

Daily News Staff Writer

UPDATE: The Lightning have acquired a second round pick in '12 or '13, a fourth round pick in '13 and left winger Jon Kalinski from the Flyers for Pavel Kubina, according to their Twitter account.FROM EARLIER: Pavel Kubina is heading to Philadelphia.

For now, the Flyers are just trying to figure out who is leaving.

According to reports, the Flyers have moved two draft picks to the Tampa Bay Lightning in exchange for Kubina.

The Flyers (and Lightning) have not yet announced the move – almost 2 hours after its reported closing – because the trade call has not even been made with the NHL’s central registry office. That’s because this deal for Kubina is pending on another deal the Flyers make, since adding Kubina would put them over the 50-contract limit.

The Flyers have yet to comment publicly on the matter.

The Flyers would need to drop a contract – including something as simple as trading a minor leaguer for future considerations or voiding a contract like Johan Backlund’s. Backlund, 30, started the season on a one-way NHL deal but has since left the Phantoms to play with Karpat in Finland.

But is this deal part of something bigger than that?

Rumors have been swirling that adding Kubina is just one piece to the Saturday night trading puzzle, which could include acquiring Columbus captain Rick Nash.

Blue Jackets general manager Scott Howson was back in Philadelphia for the second time in a week on Saturday, to watch the Flyers’ disheartening loss to Pittsburgh.

Either way, Kubina appears destined for Philadelphia.

The return to Tampa Bay, floundering at the bottom of the Eastern Conference, is a 2nd round pick in this June’s draft that was a conditional pick from Florida in last summer’s trade for Kris Versteeg, and a 4th round pick in 2013.

Kubina, 34, carries with him $3.850 million salary cap hit, which would be pro-rated for the remainder of the season. He is a veteran of 953 NHL games – with nearly 10 seasons worth played with the Tampa Bay franchise. He won a Stanley Cup with the Lightning in 2004.

Kubina would have needed to give Lightning general manager Steve Yzerman a list of teams to which he could be traded, to satisfy his limited no-trade clause. The Lightning kept him off the ice at practice on Thursday to “protect team interests” in case of a trade. He was a healthy scratch on Thursday against San Jose and again on Saturday night against Washington.

On the surface, two pretty good draft picks seems like an awfully high price to pay for an aging defenseman who will become a free agent on July 1.

Kubina, who is officially listed at 6-foot-4 and a whopping 258 pounds, is a much more offensive-minded defenseman than Nicklas Grossman, who made his debut on Saturday.

The common threads between both of these trades? The Flyers didn’t need to give up a player to acquire Grossman and Kubina. And both can walk at the end of the season if the Flyers aren’t satisfied with their play.

To make room for Kubina on the roster, the Flyers would need to demote a defenseman. That would likely be rookie Marc-Andre Bourdon, who has struggled lately after a promising start to his NHL career in November and December.

Now, with Kubina on the roster and Bourdon back on the Phantoms, the Flyers would appear to have approximately $939,000 in available salary cap cushion on the $64.3 million cap.